Can't access public web directory

[sakibmahmud]

I can't access any folder located in public web directory /var/www/html/FOLDER/FOLDER/FILES. I both tried using the IPv4 address and hostname. Same result. Please check attachment.

[dev]

That looks like the page HAS loaded, but it's missing its assets (CSS/JS etc).

If you open up the dev console, do you see any 404 errors?

[sakibmahmud]

what is dev console?

[DanSchaper]

http://<domain>/public/ISO/ is a 404 error.

[sakibmahmud]

no 404 error.

[DanSchaper]

Yes, 404 error.

[sakibmahmud]

How can I fix it?

[DanSchaper]

Google for "how to fix 404 errors"?

[sakibmahmud]

but I can access http://ipaddress/admin and also access (download) http://ipaddress/public/ISO/boot.iso. just directory listing not working.

[DanSchaper]

Then your webserver isn't configured to display directory listings. Fix that.

[sakibmahmud]

i'm using default pihole configuration

[DanSchaper]

Our configuration is not designed for hosting other services or files.

[deHakkelaar]

Add below line to the file /etc/lighttpd/external.conf :

$HTTP["url"] =~ "^/public($|/)" { server.dir-listing = "enable" }

And reload to apply:

sudo service lighttpd reload

[sakibmahmud]

Thank you so much, it worked! I'm glad you helped me.

[deHakkelaar]

Explanation is that you were trying to access a folder that didnt contain an expected index.php or index.html file resulting in a 404 error as posted by @DanSchaper previously.
Pi-hole is configured to handle 404's in its own way:

pi@ph5:~ $ cat /etc/lighttpd/lighttpd.conf
[..]
server.document-root        = "/var/www/html"
server.error-handler-404    = "/pihole/index.php"
[..]

Making the folder file listing enabled, mitigates the 404 error.